LaTeX FAQ: "How do I use font colors in LaTeX?"
Defining and using font colors in LaTeX documents turns out to be pretty easy, and it's a great LaTeX feature. Although my choice of colors may leave something to be desired, this example requirements specification was written with LaTeX, and converted to HTML using the latex2html conversion program.
(A really cool thing is that I also generated a LaTeX PDF version of that same requirements specification from the same LaTeX source files. Being able to create a LaTeX HTML document and a LaTeX PDF document from the same LaTeX source is really a terrific feature for technical specifications like this. (Not to mention that you can also keep all your LaTeX source files in a version control system, like CVS or SVN.))